<template>
	<view v-if="goods_info.goods_name" class="goods-detail-container">
    <!-- 轮播图区域 -->
		<swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
		  <swiper-item v-for="(item, i) in goods_info.pics" :key="i">
        <image :src="item.pics_big" @click="preview(i)"></image>
		  </swiper-item>
		</swiper>
    
    <!-- 商品信息区域 -->
    <view class="goods-info-box">
      <!-- 商品价格 -->
      <view class="price">
        ￥{{goods_info.goods_price}}
      </view>
      <!-- 商品主体区域 -->
      <view class="goods-info-body">
        <!-- 商品名字 -->
        <view class="goods_name">
          {{goods_info.goods_name}}
        </view>
        <!-- 收藏区域 -->
        <view class="favi">
          <uni-icons type="star" size="18" color="gray"></uni-icons>
          <text>收藏</text>
        </view>
      </view>
      <!-- 运费 -->
      <view class="yf">快递：免运费</view>
    </view>
    
    <rich-text :nodes="goods_info.goods_introduce"></rich-text>
    
    <!-- 商品导航组件区域 -->
    <view class="goods_nav">
        <uni-goods-nav :options="options" :fill="true" :button-group="buttonGroup" @click="onClick" @buttonClick="buttonClick" />
    </view>
	</view>
</template>

<script>
  // 导入辅助函数
  import {mapState,mapMutations,mapGetters} from 'vuex'
  
	export default {
    computed:{
      // 辅助函数通过计算属性来把数据拿出来
      ...mapState('m_cart',[]),
      ...mapGetters('m_cart',['total'])
    },
    // 监听器
    watch:{
      // total(newVal){
      //   const findResult = this.options.find(x=>x.text==='购物车')
      //   if(findResult){
      //     findResult.info = newVal
      //   }
      // }
      // 一加载马上监听，然后马上启动
      total:{
        handler(newVal){
          const findResult = this.options.find(x=>x.text==='购物车')
            if(findResult){
              findResult.info = newVal
            }
        },
        immediate:true
      }
    },
		data() {
			return {
				goods_info:{},
        options: [
             {
        			icon: 'shop',
        			text: '店铺',
        			infoBackgroundColor:'#007aff',
        			infoColor:"red"
        		}, {
        			icon: 'cart',
        			text: '购物车',
        			info: 0
        		}],
        buttonGroup: [{
        	      text: '加入购物车',
        	      backgroundColor: '#ff0000',
        	      color: '#fff'
        	    },
        	    {
        	      text: '立即购买',
        	      backgroundColor: '#ffa200',
        	      color: '#fff'
        	    }]
			};
		},
    onLoad(options){
        console.log(options)
        const goods_id = options.goods_id
        this.getGoodsDetail(goods_id)
    },
    methods:{
      // 辅助函数把方法拿过来
      ...mapMutations('m_cart',['addToCart']),
      
      
      async getGoodsDetail(goods_id){
        const {data:res} = await uni.$http.get('/api/public/v1/goods/detail',{goods_id: goods_id})
        if(res.meta.status !== 200) return uni.$showMsg()
        
        // 数据处理-正则表达式处理数据
        res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g, '<img style="display:block;"').replace(/webp/g, 'jpg')
        
        
        this.goods_info = res.message
      },
      // 图片预览
      preview(i){
        uni.previewImage({
          current:i,
          urls: this.goods_info.pics.map(x=>x.pics_big)
        })
      },
      onClick(e){
        if(e.content.text === '购物车'){
          uni.switchTab({
            url:'/pages/cart/cart'
          })
        }
      },
      buttonClick(e){
        if(e.content.text === '加入购物车'){
          // 组织一个商品的信息对象
          //{ goods_id, goods_name, goods_price, goods_count, goods_small_logo, goods_state }
          const goods = {
            goods_id:this.goods_info.goods_id,
            goods_name:this.goods_info.goods_name,
            goods_price:this.goods_info.goods_price,
            goods_count: 1,
            goods_small_logo:this.goods_info.goods_small_logo,
            goods_state:true
          }
          // 调用全局方法addToCart
          this.addToCart(goods)
        }
      }
    }
	}
</script>

<style lang="scss">
swiper{
  height: 750rpx;
  
  image{
    width: 100%;
    height: 100%;
  }
}

.goods-info-box{
  padding: 10px;
  padding-right: 0;
  
  .price{
    color: #C00000;
    font-size: 18px;
    margin: 10px 0;
  }
  .goods-info-body{
    display: flex;
    justify-content: space-between;
    
    .goods_name{
      font-size: 13px;
      margin-right: 10px;
    }
    
    .favi{
      width: 120px;
      font-size: 12px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      border-left: 1px solid #efefef;
      color: gray;
    }
  }
  
  .yf{
    font-size: 12px;
    color: gray;
    margin: 10px 0;
  }
}

.goods_nav{
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
}

.goods-detail-container{
  padding-bottom: 50px;
}
</style>
